Dental handpiece spray



Aug.'17 1926.

' 'L. SElDL ET AL DENTAL HANDPIECE SPRAY Filed Feb. 5, 1925 m m m Patented Aug. 17, 1925.

burrs stares earner orrics.

LEO SEIDL AND ARMIN KRAUSZ, OF BROOKLYN, NEW YORK.

DENTAL HANDPIECE SPRAY.

Application filed February 3,1925. Serial No. 6,548.

in conjunction. with a dental hand-piece, but

these apparently fail to afford the proper necessities, and to take into consideration the following requirements,

In operating a hand-piece with a grlnding element such as a stonewheel the dentist must use the thumb, first and second fingers of one hand to obtain the proper and recognized grip on the hand-piece, depending on the other fingers of the same hand to obtain a proper rest. The fingers of his other hand are used to hold the cheek or lip of the patient away from contact with the machine or tooth being operated upon. It is also necessary to point out that a stonewheel is used with three motions, namely, push motion, pull motion, and cutting mo tion. Opposite sides of the stone-wheel are used for the first two motions, and the edge for the third. At the present day also, handpieces of the straight type are not always used, but the contra-angle attachment is placed into use on the hand-piece, and the stone-wheel is carried on the mandrel of the contra-angle attachment operating in a different plane than on the straight hand piece.

It will therefore be apparent at the start, that to have an efiicient spray for dental hand-pieces it is necessary that the same does not prohibit the accustomed and recognized use of the fingers; that it supply all surfaces of a stone-whee1 with moisture; and that it be readily applicable to all types of hand pieces.

The objects of the present invention are to afford a device meeting the foregoing requirements and overcoming the objections to the devices for the same purpose.

Other objects and advantages of the 'in' vention will be apparent during the course of the following description, throughout which reference is made to the accompanying drawings forming a part of thisspecification, and in which,

Figure 1, is a top plan view of a dental hand-piece with an attachment embodying the invention applied thereto, and illustrating the application and use of the invention;

Fig. 2 is a side elevation of an apparatus embodying the invention; and

Fig. 3, is a sectional view taken approximately on the line 33 of Fig. 2.

Referring to the drawings, wherein for the purpose of illustration is shown a preferred embodiment of the invention, the numeral 5 designates the usual dental handpiece having a pulley wheel 6, to which is applied'the cord 7 which is also connected to a dental engine, and by which the mandrel 8 carrying the stone-wheel 9 is rotated. These parts are all of standard use and form no1 part of the'present invention. in themse ves.

A preferably rigid tube 10 is connected to the hand-piece 5, by means of bands 11, other suitable means being used if desired, so long as the tube 10 can be readily disengaged from the hand-piece. The tube 10 is connected at one end to a flexible tube 12 leading from any suitable source of water supply, and to the other end of the tube 10 is connected a nozzle 13. A valve 14 is mounted in the tube 10, and is operated by means of the handle 15 to control the flow of water therethru.

The nozzle 13 is revolubly mounted in one end of the tube 10 by the tubular extension- 16 of the said nozzle which fits into the closed end of the tube 10 as illustrated in detail in Fig. 3, so that the nozzle 13 can be rotated to any desired position with respect to the tube '10, and secured in the desired position by means of the set-screw 17. The nozzle is preferably formed with two spray jets 18 and 18 having oppositely disposed constricted openings, so that water issupplied to each side of the stone-wheel. It will be noted by reference to the drawings that the jet 18 is formed by the constricted straight end of the nozzle 13, while the jet 18 by a substantially U shaped extension coming off of the nozzle proper adjacent the jet 18, and that the arms of the said U shapedextension forming the jet 18 embrace the stone-wheel 9 when the nozzle is in position to supply water to the stone-wheel, as illustrated in the full line positions of the nozzle in the drawings.

By reference to Fig. 2 of the drawings, it will be noted that the nozzle 13 can be swung on its pivoted extension 16, into a position clear of the stone-wheel 9 and the mandrel 8, as indicated in dotted lines. The nozzle iii) is readily swung into this position and secured there through the set-screw 17, when the operator does not desire to use'the same.

Figure 1 illustrates the proper grip on a dental hand-piece, and. it wil be observed:

tl at the valve handle '15' is in close proX-' imity to the thumb of the hand-inwhich the hand-piece is held, and therefore, by a slight movement of the thumb can .be quickly op-' 15, and as the fingers of suchhand are natu- I rally beingused to hold the part of the patient-sface-ad acent thetooth being operated upon, the use of Oneof the fingers to toucliathe' valve handle necessitates no stopping" of work; or relinquishing grip on the handsp-iece;

1noperatioir, the sprayingatt chment is applied to the hand piece detach'ably but securely-'byumeansof the clampin band 11. lVhena stoneqvheeliis placed into thehandpiece and is to be used, the nozzle 13 is swung: into the fullline positions indicated in Figures 1 and 2. The operator then grips the hand piecaan'd by turning the valve-hand1eto the dotted line position indicated in'Figure 1 in any of the manners above mentioned, allows water to flow thru the. tube 10, extension 16, nozzle 13, and jets 18an-d18 'on to bothsides of the stonewheel 9. The flow'of'water'can be controlled and regulated by the valve handle 15 at any time. Due to the fact that both sides of the stone-wheel are sprayed, and naturally some' of-the moisture runs onto the edge of the wheel, all surfaces of the wheel are kept moist, and the wheel greatly cooled.

It will be apparent that the invention is just as effective when a contra-angle attachment is placed on the hand piece, for the nozzle 13 can be swung into position rela tive to a stone-Wheel at any point in its path of motion on its pivot 16. While it is true that some contra-angle attachments will lengthen the distance of the stone-wheel from the end ofthe hand-piece proper, it must be remembered that the spraying clevice is detachably connected to the hand piece and can be moved longitudinally with respect to the hand-piece.

It is obvious that many changes might be resorted to in the construction and assembling of the several parts without departin from the spirit of the invention or scope or the appended claims, We desire to point out with a source ofwater supply, water flow" controlling means associated therewith, a nozzle associatedwith said tubular member and angnlarly adjustable with respect there to, and a plurality of oppositely disposed spray ets carried by said nozzle.

2. A-nozzle for dental stonewheel spraying apparatus comprising, a body member for attachment to a source of water supply on a-hand piece, a plurality of oppositely disposed spray jets carried by said body member, one of said jets being; formed by a U shapedextension ofthe body member, and all of said jets being angularly adjustable with the nozzle with respect to the hand piece and instruments mountcd'in the hand piece by movement of thebody member.-

3. A spraying attachment for dental hand-pieces comprising a tubular member for attachment-to the hand-piece,- a nozzle, a tubular'extension on said nozzle rotatably mounted in the. first tubular member and communicating with the interiors of: the

first tubular member and nozzle, oppositely dis ose'd s Jra 'iets formed at the end of said nozzle and adjustably rotatable therewith on 'the tubular extension, and means for maintaining said nozzle andspray jets in desired position with respect to the hand piece and instruments mounted therein.

Intestimony whereofwe alfix our signatures.

LEO SEIDL. ARMIN KRAUSZ. 

